Oxidation resistant ferrous base foil and method therefor

Details Oxidation resistant ferrous base foil and method therefor Oxidation resistant ferrous base foil and method therefor

1987-05-08

1988-03-08

Silverberg, Sam

Coating processes

With post-treatment of coating or coating material

Heating or drying

427431, 148 63, C23C 212

Patent

active

047299126

ABSTRACT:
Aluminum coated ferritic base metal foil formed by cold reduction of hot dip aluminum coated ferritic steel strip containing from 10% to about 35% chromium, up to 3% aluminum, and up to 1% silicon, the foil having a ratio of aluminum coating thickness on both sides to base metal foil thickness of at least 1:10, with at least 4% by weight total aluminum. The method of production includes heating the foil in an oxidizing atmosphere within specified temperature and time limitations to provide a porous surface having a thin layer of aluminum oxide. The foil is adapted for fabrication into monolithic support structures for catalytic converters for internal combustion engine exhaust systems.

REFERENCES:
patent: 4675214 (1987-06-01), Kolbane

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